1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet.taglib.security;
24  
25  import com.liferay.portal.kernel.util.HttpUtil;
26  import com.liferay.portal.kernel.util.Validator;
27  import com.liferay.portal.model.Company;
28  import com.liferay.portal.model.Group;
29  import com.liferay.portal.model.GroupConstants;
30  import com.liferay.portal.model.Layout;
31  import com.liferay.portal.service.GroupLocalServiceUtil;
32  import com.liferay.portal.theme.ThemeDisplay;
33  import com.liferay.portal.util.WebKeys;
34  import com.liferay.util.Encryptor;
35  
36  import javax.servlet.http.HttpServletRequest;
37  import javax.servlet.jsp.JspException;
38  import javax.servlet.jsp.PageContext;
39  import javax.servlet.jsp.tagext.TagSupport;
40  
41  /**
42   * <a href="DoAsURLTagUtil.java.html"><b><i>View Source</i></b></a>
43   *
44   * @author Brian Wing Shun Chan
45   */
46  public class DoAsURLTagUtil extends TagSupport {
47  
48      public static String doEndTag(
49              long doAsUserId, String var, boolean writeOutput,
50              PageContext pageContext)
51          throws JspException {
52  
53          try {
54              HttpServletRequest request =
55                  (HttpServletRequest)pageContext.getRequest();
56  
57              ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
58                  WebKeys.THEME_DISPLAY);
59  
60              Company company = themeDisplay.getCompany();
61              Layout layout = themeDisplay.getLayout();
62  
63              Group guestGroup = GroupLocalServiceUtil.getGroup(
64                  company.getCompanyId(), GroupConstants.GUEST);
65  
66              String doAsURL =
67                  guestGroup.getPathFriendlyURL(false, themeDisplay) +
68                      guestGroup.getFriendlyURL();
69  
70              if (doAsUserId <= 0) {
71                  doAsUserId = company.getDefaultUser().getUserId();
72              }
73  
74              String encDoAsUserId = Encryptor.encrypt(
75                  company.getKeyObj(), String.valueOf(doAsUserId));
76  
77              doAsURL = HttpUtil.addParameter(
78                  doAsURL, "doAsUserId", encDoAsUserId);
79  
80              if (Validator.isNotNull(var)) {
81                  pageContext.setAttribute(var, doAsURL);
82              }
83              else if (writeOutput) {
84                  pageContext.getOut().print(doAsURL);
85              }
86  
87              return doAsURL;
88          }
89          catch (Exception e) {
90              throw new JspException(e);
91          }
92      }
93  
94  }